# 方式一
# while 条件:
#     循环体
# import time
#
# while 1:
#     print('在循环中。。。。')
#     time.sleep(2)

# 第一种，flag 标志位
# count = 1
# flag = True
# while flag:
#     count = count + 1
#     if count == 5:
#         flag = False


# # 第二种
# count = 1
# while count < 5:
#     print(count)
#     count = count + 1
# print("跳出循环了")


